Alloy 926 Incoloy 926 UNS N08926 Bar

Alloy 926, also known as Incoloy 926 or UNS N08926, is a super-austenitic stainless steel with a high molybdenum and nitrogen content, offering excellent corrosion resistance in a wide range of aggressive environments, including chloride-containing media. When supplied in the form of bars, Alloy 926 can be used in various applications where high corrosion resistance and high strength are required. Here are some details about Alloy 926 bars:

Grade Name:

ASME: SB 462, UNS N08926.

Elemental Composition:

Nickel (Ni): 24-26%

Chromium (Cr): 19-21%

Molybdenum (Mo): 6.0-7.0%

Nitrogen (N): 0.15-0.25%

Iron (Fe): Balance

Manganese (Mn): 2.0% max

Silicon (Si): 1.0% max

Copper (Cu): 0.5-1.5%

Phosphorus (P): 0.03% max

Sulfur (S): 0.01% max

Carbon (C): 0.02% max

Mechanical Properties:

Tensile Strength: 110 ksi (minimum)

Yield Strength (0.2% offset): 50 ksi (minimum)

Elongation: 35% (minimum)

Hardness: Typically around 35 HRC (Rockwell C scale)

Application Range:

Oil and gas industry: Downhole and surface applications, including tubing, piping, and well components.

Chemical processing: Equipment handling corrosive chemicals, acids, and chlorides.

Marine industry: Seawater desalination plants, offshore platforms, and equipment exposed to marine environments.

Power generation: Components in heat exchangers, boilers, and condensers.

Pharmaceutical industry: Equipment for manufacturing pharmaceuticals and chemicals.

Manufacturing Process:

Alloy 926 bars are typically manufactured through processes such as hot rolling, cold drawing, or hot forging. Heat treatment may be applied to achieve desired properties.

Quality Control:

Material testing for chemical composition and mechanical properties.

Non-destructive testing (e.g., ultrasonic testing, radiographic testing).

Dimensional inspection.

Surface inspection.

Pressure testing (if applicable).

Other Common Types:

Alloy 926 is primarily supplied in the form of bars, but it's also available in other forms such as sheets, plates, pipes, tubes, fittings, and welding wire.

Common Q&A:

Q: Can Alloy 926 withstand high chloride environments?

A: Yes, Alloy 926 offers excellent resistance to chloride-induced corrosion and stress corrosion cracking, making it suitable for use in marine and chemical processing applications.

Q: Is Alloy 926 weldable?

A: Yes, Alloy 926 is weldable using conventional welding techniques. It's recommended to use matching composition filler metals to ensure the integrity of the weld joint.

Q: What are the temperature limitations of Alloy 926?

A: Alloy 926 can be used at temperatures up to around 600°C (1112°F) in oxidizing environments and up to around 1000°C (1832°F) in reducing environments.

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